Samantha -
The only difference in black lights for detecting rodent urine is the distance
away from the urine you can shine the light in order to see the fluorescent
urine; i.e.? the stronger the light, the farther away you can stand while black
lighting.
Remember, all sorts of compounds fluoresce, so don't be fooled.? In order to
detect the urine, the area must be very dark for the urine to stand out.?
Rodent urine usually shows up as trails and puddles of urine, especially
with rats, because they tend to leak urine as they walk.
Tom Parker
-Original Message-
From: samantha_rich...@nps.gov
To: pestlist@museumpests.net
Sent: Thu, Jul 30, 2009 7:30 pm
Subject: [pestlist] UV lights for identifying rodent urine
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Greetings--
I am looking for a UV light to help identify rodent entry points. I've
found a wide variety of models ranging from LED-type flashlights to
flourescent tubes, different wattages and types of batteries. . . a wide
variety of claims as to which model is the most effective. A wide variety
of prices too, from $20-200. Does anyone have experience with UV lights,
and do the more expensive ones really work better?
Thanks for your help.
Samantha Richert
Curator (SCEP)
Pacific West - Cultural Resources
909 First Avenue
Seattle, WA 98104
206-220-4130
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